How many grams of HF are needed to react with 3.0 moles of Sn? *
How many moles of SnF₂ will be produced along with 48 grams of H₂? *

Sn + 2HF (arrow) SnF2 + H2

30g
60g
120g
240g

Asolution is prepared using 0.125 glucose c6h12o6 is enough water to make 250 g of total solution the concentration of the solution, expressed in parts per million is

Why do you suppose the structural polysaccharide cellulose does not contain branches? why do you suppose the structural polysaccharide cellulose does not contain branches? branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby decreasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby increasing the rigidity and strength of the microfibrils. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into globules, thereby increasing the flexibility and strength of the globules. branches in the molecule would generate side chains that would almost certainly make it difficult to pack the cellulose molecules into microfibrils, thereby decreasing the rigidity and strength of the microfibrils.

All of the following are part of the biosphere except